LiteBIRD科学目标与预测：利用多示踪体去透镜提高对暴胀引力波的灵敏度
宇宙学与河外天体物理
2024-12-30 v1
摘要
我们估计了利用多个透镜质量示踪体的外部数据集对LiteBIRD实验进行透镜B模偏振缓解（即去透镜）的效率。当前张标比r的最佳约束受限于透镜效应而非银河前景。随着r的测量越来越受透镜效应限制，去透镜将成为提高r灵敏度的关键步骤。在本文中，我们扩展了近期LiteBIRD预测论文的分析，纳入了多个质量示踪体，即来自LiteBIRD和类似CMB-S4实验的CMB透镜图、宇宙红外背景以及来自类似Euclid和LSST巡天的星系数密度。我们发现多示踪体去透镜将进一步改善对r的约束约20%。在LiteBIRD中，残余银河前景也对B模的不确定性有显著贡献，如果通过改进的成分分离方法进一步减少残余前景，去透镜将变得更加重要。
引用
@article{arxiv.2312.05194,
title = {LiteBIRD Science Goals and Forecasts: Improving Sensitivity to Inflationary Gravitational Waves with Multitracer Delensing},
author = {T. Namikawa and A. I. Lonappan and C. Baccigalupi and N. Bartolo and D. Beck and K. Benabed and A. Challinor and P. Diego-Palazuelos and J. Errard and S. Farrens and A. Gruppuso and N. Krachmalnicoff and M. Migliaccio and E. Martínez-González and V. Pettorino and G. Piccirilli and M. Ruiz-Granda and B. Sherwin and J. Starck and P. Vielva and R. Akizawa and A. Anand and J. Aumont and R. Aurlien and S. Azzoni and M. Ballardini and A. J. Banday and R. B. Barreiro and M. Bersanelli and D. Blinov and M. Bortolami and T. Brinckmann and E. Calabrese and P. Campeti and A. Carones and F. Carralot and F. J. Casas and K. Cheung and L. Clermont and F. Columbro and G. Conenna and A. Coppolecchia and F. Cuttaia and G. D'Alessandro and P. de Bernardis and T. de Haan and M. De Petris and S. Della Torre and E. Di Giorgi and H. K. Eriksen and F. Finelli and C. Franceschet and U. Fuskeland and G. Galloni and M. Galloway and M. Georges and M. Gerbino and M. Gervasi and T. Ghigna and S. Giardiello and C. Gimeno-Amo and E. Gjerløw and M. Hazumi and S. Henrot-Versillé and L. T. Hergt and E. Hivon and K. Kohri and E. Komatsu and L. Lamagna and M. Lattanzi and C. Leloup and M. Lembo and M. López-Caniego and G. Luzzi and B. Maffei and S. Masi and M. Massa and S. Matarrese and T. Matsumura and S. Micheli and A. Moggi and M. Monelli and L. Montier and G. Morgante and B. Mot and L. Mousset and R. Nagata and P. Natoli and A. Novelli and I. Obata and A. Occhiuzzi and L. Pagano and A. Paiella and D. Paoletti and G. Pascual-Cisneros and V. Pavlidou and F. Piacentini and M. Pinchera and G. Pisano and G. Polenta and G. Puglisi and M. Remazeilles and A. Ritacco and A. Rizzieri and J. Rubino-Martin and Y. Sakurai and D. Scott and M. Shiraishi and G. Signorelli and S. L. Stever and Y. Takase and H. Tanimura and A. Tartari and K. Tassis and L. Terenzi and M. Tristram and L. Vacher and B. van Tent and I. K. Wehus and G. Weymann-Despres and M. Zannoni and Y. Zhou},
journal= {arXiv preprint arXiv:2312.05194},
year = {2024}
}
备注
21 pages, 7 figures